Any recommendations for 2 player games? Not something I'm normally into but my other half likes them a bit, she plays Settlers but apparently it isn't great with only 2 players.
I second Jaipur, Patchwork and 7 Wonders: Duel, I own all 3 and they are excellent games, 7 wonders duel is a bit heavier but not too much, Dominion is also a fantastic deck building game that has had an update to the original and Intrigue versions recently, they come with multiple decks and you only use a select few so every game does feel different.
depending what you are after in terms of complexity the simple ones mentioned you could also add to that Agricola: All Creatures and even Ticket to ride - a very light and fun family style game, moving up in complexity Concordia is an excellent game and very relaxed if you don't want cutthroat as is Viticulture, both lovely euro games. Pandemic and Carcassone are highly recommended games for most players and both scale depending on players.
If you want more complex (and more expensive) Scythe and Mansions of Madness 2nd edition are both brilliant games but very different to each other, descent 2nd edition is also playable co-op and uses an app if you fancy more D&D style dungeon crawler.
There is also the likes of Magic the Gathering, Dice masters or Star Wars Destiny that are collectable games that are made for 1v1 play, you can get starter sets for all that will play relatively well against each other but they can all get very expensive very quick with booster packs (dice masters is much cheaper in this regard as they are £1 each max apposed to £3-4 for the others)
Whatever you decide to play have a look on youtube for "watch it played" you may be different but I find watching someone teach you a game is much easier then most rulebooks.